Difference between revisions of "RPI-MDI"

Revision as of 23:24, 29 December 2019

Raspberry Pi daughtercard
Fits on "old" Model B or "new" Model B Plus board
Three axis Servo PWM outputs (Servos not included)
Two PWM Controlled LEDs
I2C controlled 16-channel PWM controller PCA9685
5 channels used as above (Three Servo outputs, 2 LED outputs)
PWM controller has internal built-in clock generator - no refresh required
Even though the Raspberry Pi has 3.3V I/O, the PWM outputs run at 5V - compatible with typical servos
Three switch inputs with on-board pull-ups which can be used as GPIO lines
3X of 10 uF SMT capacitors on rear of board for PWM/Servo noise reduction
Right angle connectors for Low Profile
Recessed connectors for side connectors for smallest form factor
Very small size 1.4" x 1"
Jumper to use 5V from Raspberry Pi (if your power supply has sufficient capacity) or pads for external power or additional capacitance if needed
Python PWM - Adafruit driver

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